public class TestDemo {
    public static void main(String[] args) {
        Student s=new Student();
        System.out.println(s.name);
    }
    public static void main1(String[] args) {
        Student s=new Student();
        s.name="张三";
        s.age=10;
        s.gender="男";
        s.score=99;
        s.show();
    }
}
